Felitaur Site
Offerings
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File/Directory Permissions
Lecture Overview Index | Linux SysAdmin Homepage
| Overview |
Goals:
- Understand Linux/UNIX File/Directory Permission Structure
- Know the difference between file and directory permissions
- Understand how groups are used to control access to file system
resources
The following programs/files/directories will be discussed for this
topic:
- chmod (suid, sgid, sticky)
- chgrp
- chown
- ls -l
- umask
- /etc/group
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| Questions |
- What are the differences between files and directories for r,w,x?
- What permissions are set on your home directory? On your www
directory? How do those directories behave differently?
- Go to another students home directory, try and do an "ls" command. Go
into their www directory and try it again. How are they different?
- Who owns the /home/stu directory? What group controls it?
- What are the two methods of changing permissions on a file/directory?
- What is the umask for our server? What does that do to the default file
permissions and directory permissions?
- If I copy a file someone else owns, that is read only, who owns the
copy, and what permissions are on it?
- What are the limitations of the Linux/UNIX file system permissions?
- How do you change both owner and group with chown?
- Why are both chgrp and chown pretty useless to us on lampbusters.com?
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| Activities & Assignments |
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